Sewing-machine feed



(No Model.) f

. J. C. DAGGETT.

SEWING MACHINE'FEED.

No. 373,391 Patented Nov, 15 1337 Elz v 5 J" wmasses j I JE MK N. PETERS. Pholo-Lilhugmphnr. Washingflm n. c

UNITED Starts PATENT Orrrcn,

JOHN G. DAGGETT, OF BOSTON, ASSIGNOR OF ONE-HALF TO CHARLES H. OOLBURN, OF MILFORD, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 373,391, dated November 15, 1887. Application filed February 8, 1887. Serial No. 226,930. (No modclJ it being represented, substantially, in United States Patent No. 258,156, dated January 31, 1882.

The machine represented in the said patent has a graduated scale-bar provided with a series of holes, which are engaged by a pin forming part of a thumb-latch connected with the lever, which regulates the posit-ion of a block that determines the extent of motion imparted to the feed slide, and hence the length of the feed. By the employment of a graduated scale-bar having a series of holes it has been found most difiicult to gain for the feed the desired length of stroke, for the holes determine the minimum adjustment which it is possible that the'lever may have. To overcome this diffieulty and enable the throw of the lever to be adjusted with greater accuracy, 5 I have provided two adjustable stops, controlled as to their position by a screw or otherwise, the said stops determining the two positions tovbe occupied by the feed-regulating lever when the maximum and minimum length 0 of stitches are to be made.

Figure 1 is a front elevation of a sufficient portion of a wax'thread sewing-machine substantially such as represented in the said patent to enable my invention to be understood.

.5 Fig. 2 is a right-hand end elevation of Fig. 1. Fig. 3 is a top or plan view of Fig. 1, and Figs. 4t and 5 are details showing the rock-shaft and means cooperating with it and the feed-graduating lever and feedslide .to regulate the length of stroke of the feedslide.

The feedslide G, the stationary head-plate g, the feed-graduating lever 9, having its fnlcrum at g, the link f, the coupled blockf, extended through an inclined slot in the feedslide, and the block f entering a groove or a 5 slot, f, in the arm f of the rock-shaftf, and the awl-carrying bar F are all common to United States Patent No. 253,156, where like devices are designated by like letters, and wherein their operation is fully described. Herein I have attached to the head of the machine two ears or projections a a, in which I have placed a guide-bar, b, the latter being held in position. by means of setscrews b. This guide-bar serves the purpose ofa support 6 for two stops, 0 0, each adj ustably attached by set screws, as e c, the portions 0 of the said stops projecting horizontally across the path of movement of the feed-graduating lever 9, so that the said lever will be arrested both in its elevated and depressed positions by one or the other of the said stops 0 c, the position of the stop 0 determining the short stitch and that of the stop 0 the long stitch to be made. The

higher the stop 0 the shorter the stitch, and v the lower the stop 0 the longer the stitch, the long or short stitch being made according to which stop arrests the lever y. By employing the stops 0 c the stitches maybe adjusted very finely, so as to more exactly and accurately 8o space or divide up the stitches to be made in a boot or shoe than is possible where a hole has to be entered by a pin, for the number of adjustments which may be made of the stops is much in excess of the number of holes that can be made in a bar for the reception of a pin ofsuitable strength to arrest and hold the feedgraduating lever in a definite position.

I have herein shown the feed-graduating lever g as provided with a latch, 9*, which is 0 extended over and bears upon the sector a, the latch producing sufficient friction upon the sector to prevent the lever from jumping or from moving out of position, except when moved by the operator taking hold of the same. 5 I do not, however, desire to limit my invention to the employment of this latch, nor do I desire to limit my invention to the particular shape of the rod or guide 72 upon which the stops are adj ustably mounted, for the said ICQ stops may be made adjustable upona suitable guide of any well-known construction.

I claim- 1. The combination, with the maehinehead and the feed-graduating lever,of the stationary rod 1), attached to the front of the said head, the adjustable stops 0 and 0, having portions extending horizontally across the path of movement of the said lever, and the set-screws for securing the said stops in place, substantially as set forth.

2. The combination, with themachine-head having ears or projections a and a at the front thereof, of the feeclgraduating lever, the rod b, attached to the said cars or projections, the stops 0 and 0', having portions extending horizontally across the path of the said lever, the set-screws for securing said stops in place, the sector or bar a, and the friction-lever g and its spring, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN C. DAGG ETT.

\Vitnesses:

JAMES R. DAVIS, G. A. DAGGETT. 

